MERCEDES 166-723-09-39 Lock Rod Benz

( Manufacturer Part Number: 166-723-09-39 ), ( Part Type: Lock Rod ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Make: Mercedes-benz ), ( Year: 2013 2014 2015 2016 2017 2018 2019 ), ( Parts Included: Only Part Reference 15 On The Diagram Is Included ), ( Replaces Part Number: 1667230639 )

Review MERCEDES benz Genuine Lock Rod fits 2013–2019

The **Mercedes-Benz 166-723-09-39 Lock Rod** is a precision-engineered, high-performance component designed exclusively for select Mercedes-Benz vehicles, ensuring seamless operation and optimal security within the vehicle s locking mechanism. This part is a critical element of the door lock actuator system, specifically tailored to models that rely on this exact OEM (Original Equipment Manufacturer) specification for reliable functionality. Crafted from durable, corrosion-resistant materials, the lock rod is built to withstand the rigors of daily use, including repeated engagement and disengagement cycles, while maintaining smooth, silent operation. Its design incorporates finely machined surfaces and precision tolerances to guarantee a perfect fit within the vehicle s locking assembly, preventing unnecessary wear on surrounding components and minimizing the risk of premature failure. The lock rod plays a vital role in the vehicle s overall security system, working in tandem with the door lock motor and linkage to provide consistent, responsive locking and unlocking whether activated manually, via the key fob, or through the central locking system. For Mercedes-Benz owners seeking to restore or upgrade their vehicle s locking mechanism with genuine, high-quality parts, this lock rod represents the pinnacle of automotive engineering, combining durability, precision, and compatibility to deliver the same level of performance as the original equipment. Whether used in maintenance, repair, or replacement scenarios, this component ensures that the vehicle s locking system operates with the same efficiency and reliability as it did when it left the factory.

### **Pros and Cons of buying a Mercedes-Benz Part Number 166-723-09-39 (Lock Rod)**

#### **Overview**

The **Mercedes-Benz part number 166-723-09-39** is a **lock rod** (also known as a **ball joint rod** or **tie rod end**) commonly used in suspension systems for certain Mercedes-Benz models, particularly those with **front-wheel drive (FWD) or all-wheel drive (AWD) systems** from the late 1990s to early 2010s. This part is critical for steering and suspension alignment, and its failure can lead to handling issues, uneven tire wear, or even loss of control in extreme cases.

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### **Pros of Buying This Part**

1. **Direct OEM Fitment**

- This is a **genuine Mercedes-Benz part**, meaning it is designed to match the exact specifications of your vehicle s suspension system. It ensures proper alignment, steering response, and compatibility with other suspension components.

2. **High-Quality Materials**

- Mercedes-Benz parts are manufactured to strict quality standards, using durable materials that resist wear and corrosion better than aftermarket alternatives in many cases. This can extend the lifespan of the part compared to cheaper knockoffs.

3. **Warranty Coverage**

- Purchasing from an **authorized Mercedes-Benz dealer or approved supplier** often includes a warranty (typically 12 60 months, depending on the seller). This provides peace of mind in case of premature failure or defects.

4. **Reliability for Critical Function**

- The lock rod is a **safety-critical component**. A failing part can lead to steering instability or suspension misalignment, so a high-quality OEM part reduces the risk of sudden failure.

5. **Easier Installation and Compatibility**

- Since it is an OEM part, it is designed to fit seamlessly with the rest of the suspension system, reducing the need for modifications or additional adjustments during installation.

6. **Resale Value Protection**

- If you plan to sell your vehicle later, having OEM parts (especially suspension components) can make the car more appealing to buyers who prioritize reliability and original equipment.

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### **Cons of Buying This Part**

1. **High Cost**

- OEM Mercedes-Benz parts are **significantly more expensive** than aftermarket alternatives. The price can range from **$100 to $300 or more**, depending on the model year and supplier. This makes it a costly repair, especially if both sides need replacement.

2. **Limited Availability Outside Dealerships**

- While some online retailers (e.g., RockAuto, Amazon, or specialty Mercedes parts stores) carry this part, **not all suppliers stock OEM Mercedes-Benz components**. You may need to order from a dealer or a trusted specialty parts store, which could involve shipping delays.

3. **Potential for Counterfeit Parts**

- There is a risk of purchasing **fake or low-quality OEM parts**, especially from unscrupulous online sellers. These parts may fail prematurely or not fit correctly, leading to further damage or safety risks. Always verify the seller s reputation and part authenticity.

4. **Labor Costs for Replacement**

- Replacing a lock rod typically requires **specialized tools and mechanical skill**, as it involves adjusting suspension geometry and possibly recalibrating the steering system. Labor costs at a dealership can be **$150 $300 per hour**, making the total repair bill substantial.

5. **Aftermarket Alternatives May Be Sufficient**

- High-quality aftermarket brands (e.g., **Fel-Pro, Dorman, or Mopar**) offer **compatible, durable, and often cheaper alternatives** that meet or exceed OEM standards. For many drivers, these parts provide a cost-effective solution without sacrificing reliability.

6. **Potential for Overkill on Older Vehicles**

- If your Mercedes-Benz is **older (15 years) or has high mileage**, the overall condition of the suspension may warrant a **full suspension overhaul** rather than just replacing the lock rod. In such cases, investing in an OEM part may not be the most cost-effective solution.

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### **Conclusion**

The **Mercedes-Benz 166-723-09-39 lock rod** is a **high-quality, reliable OEM part** that ensures proper fitment, durability, and safety for your vehicle. It is the **best choice if you prioritize original equipment quality, warranty coverage, and long-term reliability**, especially for newer or high-mileage vehicles where suspension integrity is critical.

However, the **high cost and potential availability issues** make it less ideal for budget-conscious buyers or those who prefer aftermarket options. If you opt for an aftermarket part, ensure it is from a **reputable brand** (e.g., **Fel-Pro, Mopar, or ACDelco**) to maintain safety and performance standards.

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### **Recommendation**

- **Buy the OEM part from an authorized Mercedes-Benz dealer or a trusted online supplier** (e.g., **Mercedes-Benz Parts Online, RockAuto, or a specialty Mercedes parts store**).

- **Verify the seller s authenticity** to avoid counterfeit parts.

- **Have the replacement done by a Mercedes-Benz dealership or a trusted mechanic** to ensure proper alignment and steering calibration.

- **Consider a high-end aftermarket alternative** (e.g., **Fel-Pro or Dorman**) from a reputable brand. These parts often match OEM quality at a fraction of the cost.

- **Check for warranty coverage** on aftermarket parts, as some brands offer limited warranties.

- **Assess whether a full suspension inspection is needed** before replacing just the lock rod. A failing lock rod may indicate broader suspension wear (e.g., bushings, ball joints, or control arms).

- **Compare the cost of OEM vs. aftermarket** and weigh it against the **total suspension health** of the vehicle.

- **Do not attempt DIY replacement** unless you have **experience with suspension work**. Improper installation can lead to **steering misalignment, uneven tire wear, or safety hazards**.

- **Use a trusted mechanic** who specializes in Mercedes-Benz vehicles to ensure proper torque settings and alignment.

- **Best for:** Owners who want **OEM reliability, warranty protection, and long-term durability** and can afford the higher cost.

- **Alternative for:** Budget-conscious buyers who prioritize **quality aftermarket parts** from trusted brands.

- **Avoid if:** The vehicle has **severe suspension wear** or the repair is being done as a **last-minute fix** without proper diagnostics.

For most drivers, **a well-chosen aftermarket part from a reputable brand** offers a **cost-effective balance** without compromising safety, provided the seller is trustworthy. However, if you **value Mercedes-Benz s engineering standards and want the best possible fit**, the OEM part is the **preferred choice**.

Details:

Electrical parts are not returnable. Coupe, lock knob. Parts must be resalable and in the original packaging. Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer.

Convertible, lock knob.

part #: 1667230939 prices

• $21.78-$34.80

specifications carlockiio:

• for makes: Mercedes
• for years: 2013-2019
• mpn: 166-723-09-39
• part type: Lock Rod
• genuine oem: Yes
• manufacturer warranty: 1 Year
• fitment type: Direct Replacement
• make: Mercedes-benz
• year: 2013 2014 2015 2016 2017 2018 2019
• parts included: Only Part Reference 15 On The Diagram Is Included
• replaces part number: 1667230639

payments carlockiio:

• wallet: Paypal
• other
• credit card: Diners-club

shipping carlockiio:

• service: Standard, Expedited, Overnight
• type: Fixed
• transit: 4-11 Days
• class: Standard, Expedited, One-day
• cost: $0.00

general carlockiio:

• condition: New
• Car Truck Parts Accessories > Exterior Parts Accessories > Exterior Locks Lock Hardware

offer carlockiio:

• quantity: 1
• sold: 0
• started: February 7, 2026
• options: Ship-to-home
• availability: In Stock

seller carlockiio:

• rating: 100.0%
• # reviews: 334
• city: Medford, Oregon

returns carlockiio:

• policy: Returns Accepted
• time: 30 Days
• paid by: Seller

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